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Astron. Astrophys. 363, 1013-1018 (2000) AcknowledgementsThe authors thank Rashid Sunyaev for numerous discussions, William Zhang for helpful discussions of PCA deadtime, Alan Smale and Keith Jahoda for the useful comments on the PCA operations. This research has made use of data obtained through the High Energy Astrophysics Science Archive Research Center Online Service, provided by the NASA/Goddard Space Flight Center. M.Revnivtsev acknowedges partial support by RFBR grant 00-15-96649.
© European Southern Observatory (ESO) 2000 Online publication: December 5, 2000 ![]() |